![background image](http://html1.mh-extra.com/html/omron/nt21-series/nt21-series_reference-manual_744543251.webp)
2-16
Section
Special Functions
242
2. Short intermittent buzzer
3. Long intermittent buzzer
For example, if the continuous buzzer and short intermittent buzzer are speci-
fied together, the continuous buzzer sounds.
Except the case the buzzer is set not to sound at all, the buzzer automatically
sounds when an error occurs at the PT. Apart from this, there are the following
two methods for sounding the buzzer.
Sounding The Buzzer by Control from The Host
The buzzer can be sounded from the host by operating the PT status control
area during operation (page 280).
A Method to Use The buzzer Screen Attribute
By setting a Buzzer screen attribute when creating screen data with the Support
Tool, the buzzer can be sounded when the created screen is displayed (page
280).
When the buzzer is sounding, it can be stopped in the following ways.
•
By operating the PT status control area from the host (page 282).
However, when this method is used, the buzzer will not be stopped unless
the bits for all three buzzer types — continuous, short intermittent, and long
intermittent — are set to 0 (OFF).
•
By displaying a screen for which no buzzer attribute is set (page 281).
•
By pressing a touch key assigned the buzzer stop function (page 283).
By creating a touch switch assigned the buzzer stop attribute (the [
] input key –
control) on a screen for which a buzzer attribute is set, the buzzer can be
stopped by pressing this switch.
2-16-6 Clock Function
The PT has a clock function for setting and displaying the date and time. The
clock function is backed up by the built-in battery of the PT.
Reference:
S
When the battery voltage becomes low, the time data cannot be retained by
turning off the power to the PT, or resetting the PT, consequently the clock
function will not operate correctly.
S
The PT does not allow display and setting of clock data with the clock function
from the Support Tool. To set the time, use System Menu or numeral memory
table operations.
S
No calendar or time data is set on shipment from the factory.
The PT uses numeral memory tables No. 247 to 255 for clock data.
As shown in the table below, numbers 247 to 253 are for display and reading
only, and numbers 254 and 255 are for time setting.
Numbers 247 through 253 store clock data which is updated by the internal clock
of the PT. This data cannot be rewritten by the host.
Func-
tion
Numeral
memory
table
Digit position
Information
Value
Remarks
Display/
di
247
Second
00 to 59
y
reading
only
248
Minute
00 to 59
only
249
Hour
00 to 23 24-hour system
250
Date
01 to 31
251
Month
01 to 12
252
Year
00 to 99 Last 2 digits of the year
253
Day of week 00 to 06 See below.
Sounding the Buzzer
Stopping the Buzzer
Numeral Memory Tables
Used with the Clock
Function
electronic components distributor
Summary of Contents for NT21 Series
Page 3: ...iv Downloaded from Elcodis com electronic components distributor...
Page 5: ...vi Downloaded from Elcodis com electronic components distributor...
Page 463: ...Downloaded from Elcodis com electronic components distributor...
Page 465: ...Downloaded from Elcodis com electronic components distributor...